The root account must be the only account with GID of 0.

From SOLARIS 10 X86 SECURITY TECHNICAL IMPLEMENTATION GUIDE

Associated with IA controls: IAIA-2, IAIA-1

SV-12534r2_rule The root account must be the only account with GID of 0.

Vulnerability discussion

Accounts with a GID of 0 have root group privileges.

Check content

Check passwd and group files for non-root user ids and group ids with a GID of 0. # more /etc/passwd # more /etc/group OR # awk -F: '$4 == 0' /etc/passwd # awk -F: '$3 == 0' /etc/group Confirm the only account with a group id of 0 is root. If the root account is not the only account with GID of 0, this is a finding.

Fix text

Change the default GID of non-root accounts to a valid GID other than 0.

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